Proceedings Paper

A brief introduction is given to the state-of-the-art of in-fiber integrated optics which includes in-fiber multi-waveguideds
integration, in-fiber functional elements fabrication and in-fiber interferometers developments. The
characteristics of in-fiber integrated devices are summarized and methods for their fabrication are also described.
Examples of sensing are shown that it have the potential to be exploited in a variety of wide applications.